The 100 Best Android Apps of 2015

Asana

Free
Trello and Any.Do work great for personal to-do lists and small projects, but Asana is the 800 pound gorilla of task management for teams. While other project management tools focus on collaboration, Asana is all about workflows using check-box tasks that can be assigned to individuals. In truth, the app pales in comparison to the web interface, but it's a fantastically powerful tool.